- Dolby Multichannel Audio Tool User's Manual

42 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in DVD Mastering
5.2 Typical Tasks
TheDP570isusedinthemonitorchaintoemulateaconsumer ʹslisteningenvironment.
5.2.1 Setting the Dialogue Level
Asthemixisnearingcompletion,usethedialoguelevelindicatorsinDolbyRemote570
showninFigure 5‐2duringarepresentative periodofspeechtoselecttheDialogueLevel
Setvaluefortheprogram.Themeasuredvalueoftheaudioprogramappearsinyellow;
thedialoguelevelvaluesetinthe
softwareappearsingreen.
Figure5‐2 
Figure 5-2 Dialogue Level Controls
Inmostcases,selectingandmeasuringarepresentativeperiodofspeechwithinthe
programwillserveasagoodexampleoftheoveralldialoguelevelthroughoutthe
program,providedgoodmixingpracticesareobserved.Insomecasessuchas
documentaries,locationsound,andsoon,itmaybedifficulttomatch
thedialoguelevel
fromsectiontosection,andwhilethedialoguelevelindicatorontheDP570canhelp,your
earsarethebesttool.
TodetermineaDialogueLevelvaluefortheprogram,useshort‐termmeasurementsas
theyprovideameasurementovera10‐secondperiodofprogramaudioand
donotaverage
themeasurementoveralongperiodoftime.Formoreinformationonthemeasurement
modes,seeSection 4.7.2.
PressingtheAcceptbuttonresetstheDialogueLevelparameterwithintheoutput
metadatastreamfeedingdownstreamequipmenttoequaltheyellowvalue.Thegreen
numberchangestothevalueselected.
5.2.2 Monitoring the Dialogue Level
Asyoumix,checkthedialoguelevelindicator—theyellownumbersshowninFigure 5‐2—
frequentlytobesurethattheprogramstayswithinacceptablelimits.
Note: For5.1programming,themeasurementchannelshouldbesettoCenter,asmostof
theimportantspeechcontentwilloccurinthischannel.MeasureboththeLeftand
Rightchannelsofstereoinput.